Title:
GAS INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/000966
Kind Code:
A1
Abstract:
A gas injection device, having: a gas channel (11) comprising a gas inlet (111) above and a gas outlet (112) below; and a light channel (12) comprising an incoming light channel (121) and a reflective light channel (122) respectively located on two sides of the gas channel (11). A gas passes the gas channel (11) to reach a surface of a sample under test, and flows out from the light channel (12), the gas outlet (112) of the gas channel (11), and a narrow gap of the surface of the sample under test, wherein the air flow is a laminar flow, and has a Peclet number greater than 1. The gas injection device of the present invention can effectively prevent an ambient gas from back-mixing in a measurement system.
Inventors:
XU KAIDONG (BE)
Application Number:
PCT/CN2017/084102
Publication Date:
January 04, 2018
Filing Date:
May 12, 2017
Export Citation:
Assignee:
JIANGSU LEUVEN INSTRUMMENTS CO LTD (CN)
International Classes:
G01N15/08; G01N21/21
Foreign References:
| CN105445201A | 2016-03-30 | |||
| CN105316651A | 2016-02-10 | |||
| CN104250728A | 2014-12-31 | |||
| US6435008B2 | 2002-08-20 | |||
| CN104046565A | 2014-09-17 |
Attorney, Agent or Firm:
BEIJING TRUSTED INTELLECTUAL PROPERTY AGENCY LTD (CN)
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